Profit margins. In general the lower, the more competitive. Historical average in US is 8.5%, 9-10% more recently. This is pretty competitive! Although a bit l

Profit margins. In general the lower, the more competitive. Historical average in US is 8.5%, 9-10% more recently. This is pretty competitive! Although a bit less recently because profit margins went up ~1.5%. This is also, generally, why different industries have different profit margins. Here, its even more obvious.